I disagree with Jeff above. Criminal and civil liabilities do not attach simply because one throws a strike. That assumes of course that using force is legally justified and the amount of force used isn't excessive. With all that said, if you can defend yourself or others without using strikes and kicks, so much the better when the event gets posted on You Tube. Kicking and punching look brutal to the public and that is a problem in its' own right. Unfortunately sometimes one has to use strikes for an adequate defense, even if they are intended as atemi as distraction blows.